【摘要】 用在高温下与钛反应性低的石墨型,采用真空自耗电极凝壳炉浇注,运用正交试验设计,测定了Al、Mo含量对Ti Al Mo 1Zr系铸造钛合金铸造工艺性能的影响。试验结果表明:Al增加合金的流动性和收缩率,而Mo的作用则是降低合金的流动性和收缩率。在所讨论的范围内,该系合金的流动性指标远大于100mm,线收缩率不大于1 2%,集中缩孔率小于1 0%,均不出现热裂纹,表明该系合金的铸造工艺性能良好。更多还原

【Abstract】 The effects of Al and Mo content on the castability of cast Ti-Al-Mo-1Zr series titanium alloys were studied, by using the less active graphite mould at high temperature and pouring with vacuum consumable electrode arc skull furnace. The results indicate that by increasing the content of Al, the fluidity and contraction properties of alloys increase, but the use of Mo is opposite. In the extent of discussion, the fluidity specification of the series alloys get far above 100mm, line contractibility is not more than 1.2%, bulk contractibility of is below 1.0%,all alloys have not heat cracks. Therefore, it was proved that this series alloys have good castability.更多还原